style(MastersDetail): 更新卡片样式背景色和内边距

调整卡片背景色为更柔和的色调并增加内边距，提升视觉舒适度

 <!--
  * @Date: 2025-10-30 20:00:25
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2025-10-31 16:01:53
+ * @LastEditTime: 2025-11-02 12:16:55
  * @FilePath: /stdj_h5/src/views/MastersDetail.vue
  * @Description: 文件描述
 -->
@@ -69,7 +69,8 @@ const formatNameWithSuperscript = (name) => {
 
 .item-card {
   position: relative;
-  background: #fff;
+  padding: 0.5rem;
+  background: #F2EBDB;
   border: 2px solid #6B4102;
   overflow: hidden;
   transition: transform 0.2s ease;
@@ -85,6 +86,7 @@ const formatNameWithSuperscript = (name) => {
   padding: 0.85rem;
   text-align: center;
   color: #6B4102;
+  background: #FCF8F1;
 }
 
 .item-role {